Sue, Sammie's mother, watched as her daughter was resuscitated, only to be put into an induced coma. She would never wake up

Staphylococcus aureus bacteria are normally present on healthy people yet the bacteria can cause an infection if it enters the body through a cut or a catheter. MRSA is a strain of Staph resistant to several widely used antibiotics, making it more difficult to treat.

Doctors decided to remove the intravenous antibiotic line in her neck because – like her hip – the area had become infected with MRSA. Within an hour Sammie suffered a fit and stopped breathing.

Her mother Sue watched helplessly as doctors fought to bring her back. She was placed in an induced coma and moved to intensive care.

Over the following days Sammie's kidneys shut down and her blood pressure plummeted as Sue was informed the antibiotics were not working. Doctors then told her there was only a 20 per cent chance her daughter would survive.

Despite bringing the HLH under control, the MRSA was wreaking havoc on her body.

Five weeks after arriving in hospital – and three weeks after undergoing a routine bone marrow biopsy – Sammie died from major organ failure.